PLC splitter assembly process

PLC splitters are assembled by integrating the PLC chip with fiber arrays, splicing or connectorizing the fibers, and securing them in protective trays or modules for deployment.Overview of PLC Splitter ComponentsA PLC splitter consists of a planar waveguide circuit chip, input and output fiber arrays, and protective packaging. The chip is fabricated using lithography on a silica substrate to define optical paths, allowing uniform splitting of light from one or two input fibers into multiple output fibers . The output ratio (e.g., 1x4, 1x32, 1x64) determines the number of fibers in the output array.Assembly StepsPreparation of FibersStrip, clean, and cleave the input and output fibers.For ribbonized fibers, de-ribboning may be required to match the PLC chip input/output ports .Splicing or ConnectorizationFusion splicing is commonly used to attach fibers to the PLC chip ports, ensuring minimal insertion loss.Alternatively, fibers can be pre-terminated with SC/APC connectors for plug-and-play installation .Integration into Trays or ModulesThe spliced or connectorized fibers are arranged in fiber trays or sub-rack modules.Trays may include covers to protect the fibers and maintain bend radius compliance.High-density modules can accommodate multiple splitters and fiber terminations, e.g., a module with 4 trays can hold 2 splitters and up to 12 fiber terminations per tray .Testing and Quality AssuranceMeasure insertion loss, uniformity, and return loss for each output fiber.Ensure the splitter meets the specified splitting ratio and optical performance.Final PackagingThe assembled splitter is secured in a protective casing or pre-loaded cassette for deployment in PON networks.Optional pre-connectorized modules allow direct integration into optical distribution frames or terminal boxes .Deployment ConsiderationsCentralized Architecture: Use larger splitters (e.g., 1x32) at the central office to distribute signals to multiple ONUs.Distributed Architecture: Smaller splitters (e.g., 1x4) are installed closer to the end-user, often in outdoor enclosures .Maintain proper fiber bend radius and avoid mechanical stress during installation to ensure long-term reliability. By following these steps, a PLC splitter can be efficiently assembled, tested, and deployed in fiber optic networks, providing stable and uniform optical signal distribution.